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// Boost.Geometry (aka GGL, Generic Geometry Library) // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. // Copyright (c) 2008-2012 Bruno Lalande, Paris, France. // Copyright (c) 2009-2012 Mateusz Loskot, London, UK. // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. // Use, modification and distribution is subject to the Boost Software License, // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) #ifndef BOOST_GEOMETRY_VIEWS_DETAIL_RANGE_TYPE_HPP #define BOOST_GEOMETRY_VIEWS_DETAIL_RANGE_TYPE_HPP #include <boost/range/value_type.hpp> #include <boost/geometry/core/ring_type.hpp> #include <boost/geometry/core/static_assert.hpp> #include <boost/geometry/core/tag.hpp> #include <boost/geometry/core/tags.hpp> #include <boost/geometry/views/box_view.hpp> namespace boost { namespace geometry { #ifndef DOXYGEN_NO_DISPATCH namespace dispatch { template <typename Geometry, typename Tag = typename tag<Geometry>::type> struct range_type { BOOST_GEOMETRY_STATIC_ASSERT_FALSE( "Not or not yet implemented for this Geometry type.", Geometry, Tag); }; template <typename Geometry> struct range_type<Geometry, ring_tag> { typedef Geometry type; }; template <typename Geometry> struct range_type<Geometry, linestring_tag> { typedef Geometry type; }; template <typename Geometry> struct range_type<Geometry, polygon_tag> { typedef typename ring_type<Geometry>::type type; }; template <typename Geometry> struct range_type<Geometry, box_tag> { typedef box_view<Geometry> type; }; // multi-point acts itself as a range template <typename Geometry> struct range_type<Geometry, multi_point_tag> { typedef Geometry type; }; template <typename Geometry> struct range_type<Geometry, multi_linestring_tag> { typedef typename boost::range_value<Geometry>::type type; }; template <typename Geometry> struct range_type<Geometry, multi_polygon_tag> { // Call its single-version typedef typename dispatch::range_type < typename boost::range_value<Geometry>::type >::type type; }; } // namespace dispatch #endif // DOXYGEN_NO_DISPATCH // Will probably be replaced by the more generic "view_as", therefore in detail namespace detail { /*! \brief Meta-function defining a type which is a boost-range. \details - For linestrings and rings, it defines the type itself. - For polygons it defines the ring type. - For multi-points, it defines the type itself - For multi-polygons and multi-linestrings, it defines the single-version (so in the end the linestring and ring-type-of-multi-polygon) \ingroup iterators */ template <typename Geometry> struct range_type { typedef typename dispatch::range_type < Geometry >::type type; }; } }} // namespace boost::geometry #endif // BOOST_GEOMETRY_VIEWS_DETAIL_RANGE_TYPE_HPP
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